If your internet access is disrupted, the lobby will try to reconnect to the Live Dealer system, with the system denoting the session as "reconnecting". If you do not reconnect in 8 seconds, then the session is killed and the money is automatically returned.
If you have a game in progress, the bet you inserted will remain and the system will process it even if it takes longer than 8 seconds to reconnect. While playing a hand of Blackjack, your hand will be automatically played according to perfect strategy.